患者，女，10岁，替牙<img src="/Image1/ff/ff58e141a246beb7c4df5f2f2af7ed58.jpg" />，上颁发育正常，前牙<img src="/Image1/de/def25a79a8470e64874636e40bd0c914.jpg" />与<img src="/Image1/42/4241a176628555f5d93b22061790893c.jpg" />之间开<img src="/Image1/ff/ff58e141a246beb7c4df5f2f2af7ed58.jpg" />，有舌前伸习惯，无牙列拥挤，上前牙唇倾。患者错<img src="/Image1/ff/ff58e141a246beb7c4df5f2f2af7ed58.jpg" />的主要原因是（）<br>A:佝偻病<br>B:遗传<br>C:骨性错<img src="/Image1/ff/ff58e141a246beb7c4df5f2f2af7ed58.jpg" /><br>D:牙性错<img src="/Image1/ff/ff58e141a246beb7c4df5f2f2af7ed58.jpg" /><br>E:口腔不良习惯